/*主要部分的下部分导航样式*/
.navigation_b{
    width: 100% ;
    height: 130px;
    background: #D7D7D8;
}
.navigation_b_banner{
    width: 1200px;
    height: 130px;
    margin: 0 auto;
    overflow: hidden;
}
.navigation_b_banner li:nth-child(2n){
    float: left;
    width: 240px;
    height: 130px;
    background: #EBEBEC;
    position: relative;
}
.navigation_b_banner li:nth-child(2n-1){
    float: left;
    width: 240px;
    height: 130px;
    background: #E2E2E2;
    position: relative;
}
.navigation_b_banner li>img{
    position: absolute;
    right: -30px;
    top:0;
    z-index: 0;
}
.navigation_b_banner li>h2{
    font-size: 20px;
    font-weight:1000;
    margin-top: 45px;
    margin-left: 10px;
    font-style: inherit;
    -webkit-transition: all .5s;
    -moz-transition: all .5s;
    -ms-transition: all .5s;
    -o-transition: all .5s;
    transition: all .5s;
}
.navigation_b_banner li>p {
    font-size: 13px;
    margin-left: 10px;
}